alpine-helm: add minimal test deployment

apps/alpine-helm-deployment/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/
+.#*

apps/alpine-helm-deployment/Chart.yaml

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+apiVersion: v2
+name: ungleich-alpine
+description: Alpine Linux as a service
+
+type: application
+version: 0.1.0
+
+appVersion: "3.15.0"

apps/alpine-helm-deployment/README.md

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+Minimal, usable sample helm application

apps/alpine-helm-deployment/templates/deployment.yaml

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+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ .Release.Name }}-alpine
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/instance: {{ .Release.Name }}
+      app.kubernetes.io/component: alpine
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/instance: {{ .Release.Name }}
+        app.kubernetes.io/component: alpine
+    spec:
+      initContainers:
+      containers:
+        - name: alpine
+          image: alpine:{{ .Chart.AppVersion }}
+          ports:
+            - containerPort: 53
+            - containerPort: 80
+          volumeMounts:
+            - name: data
+              mountPath: "/data"
+          command:
+            - sh
+            - -c
+            - "sleep 10000000"
+      volumes:
+        - name: data
+          persistentVolumeClaim:
+            claimName: {{ .Release.Name }}-data
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Release.Name }}
+  labels:
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/component: alpine
+spec:
+  type: ClusterIP
+  ports:
+   - protocol: TCP
+     port: 53
+     name: dns-tcp
+   - protocol: UDP
+     port: 53
+     name: dns-udp
+   - protocol: TCP
+     port: 80
+     name: http
+  selector:
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/component: alpine
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ .Release.Name }}-data
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 100Mi
+  storageClassName: rook-ceph-block-hdd